Annis: You are consumed by bitterness,... Merlin - 4 Temporada - Eps 5

Annis: You are consumed by bitterness, Morgana. It spreads within you like a disease. In my grief, I let you infect me with your hate.
Morgana: Thais is untrue. Have you forgotten how Arthur killed your husband? Do you deny you sought revenge?
Annis: Yes, I sought revenge. But that doesn't mean it was the right thing to do.